The yellow/gold one is nice because I don't really fancy riding a bike with disc in front and coaster in the back.
Their instagram says its the newer model.
I've only ridden about on the disc-coaster version and it seemed fine but definitely disc-disc + derailler would be nicer. But I guess it's a different target market, I think the V1 is more short commutes/runs to the shops/school-run. This V2 looks more versatile.
See more and more of these Petit Porteur around Paris, local company and cheap too:
An one more mini-velo from Japan, functional in the sense only that it can be easily taken on the train: